zUnlockByteRange

Unlocks a byte range for the specified open file object.

Service:File System Services (64-Bit)

Version:OES 2

Syntax

#include <zPublics.h>

STATUS zUnlockByteRange(
   Key_t   key,
   Xid_t   xid,
   QUAD    startingOffset,
   QUAD    length);

key: (IN) Specifies the file (as returned by zOpen or zCreate) whose byte range is being unlocked.
xid: (IN) Is currently not implemented. Pass zNILXID.
startingOffset: (IN) Specifies the logical byte offset in the file where the lock begins.
length: (IN) Specifies the length (in bytes) of the lock to be released. The xid, startingOffset, and length must match to release the lock.

zOK	The operation completed successfully.
non-0	An error occurred (see Section 4.1, Return Values for a description).

Only locks not bound to a transaction can be unlocked by calling zUnlockByteRange, which prevents dirty reads and rereads for transactions.